PWRRM

pwrrm@retaqs.com

244 discussions

ECP (ECC) reactivity corrections due to AOA (CIPS)
by Kenneth Pike 05 Jul '13

05 Jul '13

Has anyone modified their ECP (ECC) procedure to account for a reactivity adjustment when the cycle experiences AOA (CIPS)? If so would you be willing to share the approach or email me a copy of your procedure. I am developing a training module on this topic and would like to include some examples/approaches. Run Silent, Run Deep Ken Pike (610) 277-8991 x 253

1 0

Removal of power coefficient
by Buchanan, William H 19 Jun '13

19 Jun '13

Good afternoon - >From previous several previous benchmarking efforts I believe Calvert Cliffs is the only remaining site that performs measurement of the Power Coefficient. We have an initiative to eliminate this test from the UFSAR and no longer perform measurement, but from an analysis standpoint it is tied directly to the fuel temperature / doppler coefficient as well as the MTC. Therefore measurement of the power coefficient serves to validate the FTC, which is a crucial input to most DBEs. My question is: what rationale did you use to remove the power coefficient from your testing regime? Note: We perform at the same time as the HFP BOC ITC measurement. We would continue to perform the ITC measurement, and simply drop the power swing portion. The test criteria of +/- 2 pcm/F would be removed from the UFSAR, effectively eliminating the test. Thanks for your time, William Buchanan Calvert Cliffs Nuclear Power Plant - Reactor Engineering Constellation Energy Nuclear Group o: 410-495-4345 c: 919-624-2447 This e-mail and any attachments are confidential, may contain legal, professional or other privileged information, and are intended solely for the addressee. If you are not the intended recipient, do not use the information in this e-mail in any way, delete this e-mail and notify the sender. -EXCIP

2 1

Vendor File Error and Reactivity Managment SL
by Gibson, Kara A. 01 Mar '13

01 Mar '13

Prairie Island was just made aware that we received a file from the vendor for our flux map processing code that could impact our margin to the Fq TS limit. This error applies to the current operating cycle on one unit and a past cycle on the other unit. An assessment was done and the current operating cycle has enough margin to the TS Fq limit given the error. A past assessment needs to be performed for all the flux maps in the current operating cycle and all the flux maps in the past cycle. Two questions: If it is found that there is no impact on the Fq margin for past flux maps in the current operating cycle given the error should this still be classified as a level 3.10? The incorrect file was used, but without any violation of TS limits. For the previous cycle, would this event still be a level 3.10 if no TS limits were exceeded given the error? The Technical basis document, although not official, does state that the "SL of an issue is based on time of discovery and the impact of the technical error if it is implemented." Your input would be appreciated. Thanks, Kara Kara Gibson Xcel Energy | Responsible By Nature Reactor Engineer 1717 Wakonade Dr. East Welch, MN 55089 P: 651.388.1121 x4719 F: 612.330.5743 E: kara.gibson(a)xenuclear.com<mailto:kara.gibson@xenuclear.com> Please consider the environment before printing this email

5 4

Reactor Engineering OJT/TPE
by Kelliher, Andrew P 28 Feb '13

28 Feb '13

As part of implementing ACAD 98-004 Revision 2 our fleet training department has been evaluating Reactor Engineering tasks for use of OJT/TPE instead of mentoring to obtain qualifications. I have the following benchmarking questions: · Has any station formally required OJT/TPE to obtain Reactor Engineering qualifications? o If so, which tasks require OJT/TPE? § What was your reasoning for requiring OJT/TPE? · For stations with moveable incore systems, operated by Reactor Engineers, have you evaluated requiring OJT/TPE to become qualified? o If so, what was your reasoning for either requiring or not requiring OJT/TPE? · For stations that have Reactor Engineers who modify plant process computer constants, have you evaluated requiring OJT/TPE to become qualified? o If so, what was your reasoning for either requiring or not requiring OJT/TPE? Any responses would be helpful. Thanks, Andy Andrew Kelliher Reactor Engineer R.E. Ginna Nuclear Power Plant Phone: (585) 771-3457 "I'm just sayin', I don't like fun." - Karl Pilkington >>> This e-mail and any attachments are confidential, may contain legal, professional or other privileged information, and are intended solely for the addressee. If you are not the intended recipient, do not use the information in this e-mail in any way, delete this e-mail and notify the sender. -IP1

7 6

Incore Detectors
by Dicus, Mark W. 01 Feb '13

01 Feb '13

Is anyone using vanadium incore detectors? Mark W. Dicus Plant Vogtle 3 & 4 Reactor Engineer 706-437-6507 mwdicus(a)southernco.com

5 4

Re: [Pwrrm] Moveable Incore Top of Core Values Following Detector Replacement
by Kelliher, Andrew P 18 Jan '13

18 Jan '13

Has anyone had to change their top of core values, after resetting the withdrawn limit switch to 0", on the moveable incore system by several inches following a detector replacement when no physical dimensions have changed (i.e. just a one for one detector replacement)? If yes, what was the cause of this change? Any feedback (i.e. yes or no) would be valuable. I've included some background at the bottom of this e-mail. Thank you in advance for your help. Thanks, Andy Andrew Kelliher Reactor Engineer R.E. Ginna Nuclear Power Plant Phone: (585) 771-3457 "I'm just sayin', I don't like fun." - Karl Pilkington During Ginna's 2012 Fall Outage the flux mapping system was replaced. This included replacement of the equipment in containment (drive boxes, transfers, etc) and in the control room. During the 75% flux map one of the new detectors failed and was replaced last month. On the old system replacement included manually lining up the detector in containment with the WLS and rezeroing the encoder. Following this rezeroing, passes were able to be taken using the previous top of core and bottom of core values without issue. On the new system this is performed by driving the detector forward from the control room and then telling the system to drive to zero position which looks for the WLS and rezeroes the resolver. However, after this detector replacement all of the top of core values were altered by several inches. >>> This e-mail and any attachments are confidential, may contain legal, professional or other privileged information, and are intended solely for the addressee. If you are not the intended recipient, do not use the information in this e-mail in any way, delete this e-mail and notify the sender. -IP2

3 2

RETAQS Calendars
by Tom Tomlinson 06 Dec '12

06 Dec '12

RETAQS will be publishing a 2013 calendar thanks to a few good customers this year. In preparing to mail our calendars, I ask that each plant provide the following: Plant Mailing Address RE Supv Name, Title, and Phone Number Number of REs in group Any potential RE training needs in 2013 If your station is not already participating in our web based RE continuing training program, a name and email address for the person at your station that we can follow up with. If you have a relatively new RE Supv, who may not have received this message, please forward to them. Thanks! Tom Tomlinson

1 0

INPO RE Seminar
by edward.mcvey＠exeloncorp.com 28 Nov '12

28 Nov '12

Just another reminder that you should plan to send someone to the INPO RE Seminar on January 9 and 10th. Please note that the attached Draft agenda has a slight error in it. It is on the 9th and 10th, which is Wednesday and Thursday, contrary to the agenda which has Tuesday and Wednesday. Ed McVey ----------------------------------------- ************************************************** This e-mail and any of its attachments may contain Exelon Corporation proprietary information, which is privileged, confidential, or subject to copyright belonging to the Exelon Corporation family of Companies. This e-mail is intended solely for the use of the individual or entity to which it is addressed. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution, copying, or action taken in relation to the contents of and attachments to this e-mail is strictly prohibited and may be unlawful. If you have received this e-mail in error, please notify the sender immediately and permanently delete the original and any copy of this e-mail and any printout. Thank You. **************************************************

1 0

INPO RE Seminar
by edward.mcvey＠exeloncorp.com 09 Nov '12

09 Nov '12

The INPO RE Seminar is January 9 and 10, 2013. The 9th is a full day and the 10th is a half day. It is a joint BWR/PWR meeting. Please be sure and consider supporting attendance at that meeting to help make it successful. You need to go on the INPO website and register for it. You can find the meeting under Plant Operations and Support and then under Engineering and Configuration Management. I realize this is the week before the BWROG RCRC meeting and a couple weeks before the PWROG RMWG meeting, but do your best to support both meetings. Focus of the INPO Seminar is different than what we usually cover at the OG meetings. Thanks. Ed McVey ----------------------------------------- ************************************************** This e-mail and any of its attachments may contain Exelon Corporation proprietary information, which is privileged, confidential, or subject to copyright belonging to the Exelon Corporation family of Companies. This e-mail is intended solely for the use of the individual or entity to which it is addressed. If you are not the intended recipient of this e-mail, you are hereby notified that any dissemination, distribution, copying, or action taken in relation to the contents of and attachments to this e-mail is strictly prohibited and may be unlawful. If you have received this e-mail in error, please notify the sender immediately and permanently delete the original and any copy of this e-mail and any printout. Thank You. **************************************************

1 0

Test, please disregard
by Carlos Vidal 30 Sep '12

30 Sep '12

This is a test from the list administrator. Please ignore it. CV

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